Bottle cap retainer and method of making same



July 11, 1933.-

C; A. M CORDY BOTTLE 0A1 RETAINER AND METHOD OF- MAKING SAME OriginalFiled Jan. 16 1928 INVENTQR @acfl? WITNESS flTTORNETS Patented duly llW333 1 no'rrnn one @rizinel application filed Ham in-y 16, 1928, EerialNo. 347,092. Divided and. this application filed. March 3:, p

' i930. aerial No, 482,922.

This invention relates to a bottle cap retainer and refers moreparticularl to bottle caps which are drawn across an upon the mouth ofthe bottle and provided with a skirt or extension ada ted to wrap orfold around the neck of the ottle.

The main ob'ect is to seal the cap upon the bottle or ot or container bymeans oi a ring of fragile metal cast or molded in one to operationaround the skirt and neck of the bottle and capable of being easilybroken when it is desired to break the seal or remove the cap and whichwill be easily detectable if broken.

Another object is to provide a simple and convenient sectional moldwhich may be temporarily clamped around the skirt and neck of the bottlefor receiving the molten metal from which the cap-retainin ring is soformed and to enable said mold to e easily and quickly detached from thebottle immediately following the casting of the retaining ring Anotherohject is to provide the ring with an integral tab or finger-piece bywhich the ring maybe hroken to release the cap and permit the same to beremoved from the bottle when desired.

Other objects and uses relating to the in- ,vention will he hrought outin the following description. in the drawing: Figure l is a perspectiveview of a bottle with the cap held thereon by my improved retainingFigure 2 is an enlarged transverse sectional view through the neck ofthe bottle and skirt oi the cap showing the mold in operative position-for casting the ring around said skirt and neck of the hottle, thedotted lines indicating one oil the clamping sections as moved to itsopen position.

Figure 3 is a sectional view of the locking device for the clampingsections taken in the plane of line 3-43, Figure 52.

Figure t is a detail sectional view taken in the plane of line 4-4,Figure 2.

Figure 5 is a detail sectional view taken the plane of line 5-5, Figure2, showing a portion of the cap and one side of the mold for forming thecap-retaining ring.

Figure 6 is a perspective View oi the detached ring.

The bottle or other receptacle A may he of any conventional form, sizeor material having the usual enlarged mouth a and neck a'--' across andaround which the cap -B is placed, the .cap beingprovided with a skirth' ad'apted to fold or fit around the neck of the hottle.

A cap-retaining, ring -'-1- of fragile metal is cast from molten metalaround the skirt and neck of the bottle to tightly impinge the skirtagainst said neck for holding the cap in operative position and isformed with a radially projecting finger-piece or tab --2 during theprocess of molding.

As illustrated, the apparatus-for casting the ring -1 around the skirtof the cap ill and neck of the bottle comprises a pair of substantiallysemi-circular clamping members 3- and 3- arranged end to end to form asubstantially continuous circular mold having their inner faces providedwith semi-annular channels or chambers l and d' which, when the sectionsare brought together end to end, register with each other and form asubstantially continuous chamber in which the ring -1 is cast. v Theinner diameter of the mold as a whole above and below the chambers iand4=- is approximately equal to the external diameter of the neck -a' ofthe bottle allowing a slight clearance for the receptio or" the shirtI)-. of the cap B-.

The meeting ends of the mold sections -3- and -3' at one side are hingedtogether at 5' to permit said sections to open and close upon the skirtof the cap and neck of the bottle, the opposite meeting edges beingprovided with outwardly flaring semi-annular flanges 6- having taperedsemi-annular recesses 7 which, @5- when the clamping sections are closedupon the skirt of the cap and neck of the bottle forming a taperedsocket for receiving a similarly tapered end of the nozzle 8.

'lhis nozzle 8 is provided with a can too tral relatively small passage9 axially therethrough for receivingthe molten metal and discharging thesame into cavities or chambers 4 and 4' during the operation of moldingthe ring 1..said nozzle being movable into and out of socket 7- as maybe required for projecting the molten metal under pressure into saidmold.

The ends of the mold sections -3 and 3 adjacent the sockets 7- areprovided with relatively thin and narrow recesses 10- projectingradially and outwardly from the adjacent ends of the chambers 4- and 4'to form extensions thereof and in which the tab +2 is molded as anintegral part of the ring.

The locking lever 11 is pivoted at --12 to one end of one of thesections as 4 to swing into and out of engagement with the adjacentportions of both of the sections, preferably at the junction of theflanges 6.. with the sections 3- and 3 Y erably formed of a single pieceor sheet of flexible moisture-proof material such as paper and it,therefore, follows that when it is placed upon the mouth of the bottleand around the neck thereof its skirt will be more or less crimped orfolded and in practice it is found to be expedient to crease and scorethe skirt radially in uniformly spaced relation circumferentially tofacilitate its crimping or folding around and close tothe periphery ofthe neck of the bottle and also to form a more or less uniform surfacefor the reception of the ring 1, and

a in order that the mold sections 3- and 3' may fit closely upon themore or less corrugated periphery of the skirt of the cap the innerperipheries of the mold sections above and below the chambers 4 and 4'are notched or corrugated to conform to the corrugated contour of'theskirt.

This construction assures a close engages ment of the inner faces of themold sections with the priphery of the skirt and also assures a closeimpingement of the skirt against theneck of the bottle to avoid leakageof the molten metal from the chambers 2 and 4 during the casting of thering -l-.

' Operation In order to cast the ring u on the skirt and neckof thebottle the cap is first drawn down tightly by hand across the mouth ofthe bottle and around the neck thereof after which the clamping sections3 and 3'- are placed around the skirt and.

the passage .9-- and into the chambers 4 and 4 to form a complete rin -1around and against the periphery o the skirt of the cap -B and also toimpinge the skirt of theca against the riphery of the neck of t ebottle, there y holding the cap in operative position on the bottle.

This casting operation is practically instantaneous and is immediatelyfollowed by the removal of the nozzle -8 from the sockets 7 whereuponthe locking lever 11 may be r'ocked to the position shown by dottedlines in Figure .3 to release the clamping members 3 and 3 and permitthem to be opened leaving the .ring 1- with its tab or finger iece -2integrally united around the s 'rt of the cap and neck of the bottle. v

The forcible withdrawal of the nozzle 8, from the sockets 7 immediatelyfollowing the casting operation breaks connection between the metal inthe opening 9 and finger piece .-2 by reason of the fact that thisconnection is relatively small and, therefore, easily broken,particularly before the metal has had time to thoroughly cool.

It is evident, however, that owing to the short time required forcasting the ring the mold sections 3- and 3'- do not have time to absorbthe heat from the molten metal and for that reason effects a quickchilling of the newly cast ring aided by the fact that the ring is ofrelatively small cross 1 section.

This quick cooling of the newly cast ring also prevents charring orother injury by heat of the skirt of the cap and renders the ringfragile and capable of being easily broken by comparatively lightverticalpressure of the finger or other object against the Attention iscalled to my pending application, Serial No. 247,097, filed January 16,1928, of which this is a division.

While I have shown and described the.

immese A. olevice for retaining s, plaited-skirt' bottle cap upon themouth and nmk of s, bottle comprisin an en&less ring of permanent sizeand orm having its inner dimmeter conforming to the exterior diameter ofthe skirt and to the individual plsils thereofi when the letter istightly applied to the neck of the bottle.

In witness whereof I have hereunto set my hand this Q ith day of January1930.

CHARLES A. MAoCORDY.

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